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Published September 2008 | Supplemental Material + Published
Journal Article Open

Satellite remote sounding of mid-tropospheric CO_2


Human activity has increased the concentration of the earth's atmospheric carbon dioxide, which plays a direct role in contributing to global warming. Mid-tropospheric CO_2 retrieved by the Atmospheric Infrared Sounder shows a substantial spatiotemporal variability that is supported by in situ aircraft measurements. The distribution of middle tropospheric CO_2 is strongly influenced by surface sources and large-scale circulations such as the mid-latitude jet streams and by synoptic weather systems, most notably in the summer hemisphere. In addition, the effects of stratosphere-troposphere exchange are observed during a final stratospheric warming event. The results provide the means to understand the sources and sinks and the lifting of CO_2 from surface layers into the free troposphere and its subsequent transport around the globe. These processes are not adequately represented in three chemistry-transport models that have been used to study carbon budgets.

Additional Information

Copyright 2008 by the American Geophysical Union. Received 13 June 2008; accepted 6 August 2008; published 9 September 2008. We thank Charles E. Miller of JPL for valuable comments and suggestions on the manuscript. We thank the reviewers, Steve Pawson and the other anonymous reviewers, for their thorough and constructive reviews. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology under contract with the National Aeronautic and Space Administration.

Attached Files

Published - CHAgrl08.pdf

Supplemental Material - CHAgrl08.avi

Supplemental Material - CHAgrl08readme

Supplemental Material - CHAgrlfigS1.tif

Supplemental Material - CHAgrlfigS2.tif

Supplemental Material - CHAgrlfigS3.tif


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August 22, 2023
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